(3GdEfSGf h GdNWQ (B/ s - (3JGjdhQ, Kjh OhQHs; (3gGeHShf, JTGQdS Ss; (3EScfOQ, EdjGSs ((3GdbGgQI (B:s (3GdeDSSI OGQ GdJYGhf ddWHY h GdfTQ,s, 1973)
Keywords: (3GdeTGcd GdHjFjIs; (3GdJdhK GdHjFjs